The module accepts CSR BlueCore5MM design; High integration small volume only with a few peripheral components can realize its powerful functions; Can connect with any devices with A2DPAVRCP bluetooth audio transmission and remote control protocol (such as: mobile phone with Bluetooth Bluetooth stereo audio transmitting module) to achieve high quality stereo audio stream; Features: Class2 power level; Powerful noise eliminating circuit; Application: all kinds of high quality bluetooth stereo headphones high quality bluetooth stereo speakers sound high quality bluetooth wireless stereo audio receiving equipment; Follow the Bluetooth V2.1 + EDR Bluetooth specification; Have SBC MP3AAC audio decoding function; Have high quality A2DP stereo audio transmission and remote control protocol; Powerful Kalimba DSP embedded data processor complete all kinds of digital speech processing. Manual: http://m5.img.dxcdn.com/CDDriver/CD/sku.269013.doc